Hi Mindy,
I have finished the first comparison, MirageOS VMs vs Linux VMs and found the
throughput performance on MirageOS VMs with a larger sender buffer size is
quite lower than my expectation.
- Configuration
http://www.cl.cam.ac.uk/~ti259/temp/config.pdf
- Throughput (64 - 2048 Bytes sender buffer size)
http://www.cl.cam.ac.uk/~ti259/temp/throughput.pdf
- Latency (TCP round-trip pingpong with a 1-Byte payload)
http://www.cl.cam.ac.uk/~ti259/temp/latency.pdf
I am now investigating what is a bottleneck by using the xentrace/xentop
commands and the mirage-trace-viewer. I have also found the followings;
- the vCPU utilization in the receiver side was reaching 100%
- the sender side and Dom0 do not seem to be a bottleneck
-> http://www.cl.cam.ac.uk/~ti259/temp/cpu.pdf
I will let you know when I have further findings.
Kind regards,
--
Takayuki Imada
On 1/10/17 6:30 PM, Mindy wrote:
Hi Takayuki,
Thanks for posting! Do you have any comments on your findings with these tools
so far? I'm particularly interested in performance regressions from the
serialization/deserialization changes in tcpip's current master.
-Mindy
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